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U.S. Department Of Transportation·District of Columbia

Continuous Lower Energy, Emissions and Noise (CLEEN) Phase IV Program: Q&A Responses and FINAL SIR Release

Closes 5/18/2026$1M – $5MRequest for Proposal
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Description

The Continuous Lower Energy, Emissions and Noise (CLEEN) Phase IV Program is a public-private partnership between the Federal Aviation Administration (FAA) and industry participants to develop and mature certifiable technologies for civil airplanes, with a focus on reducing fuel burn, emissions, and noise. The program will support the development of environmental standards and environmental reviews, and will enable the safe introduction of new airframe and engine technologies. Key areas of focus include non-traditional propulsion systems, advanced aircraft configurations, supersonic aircraft and engines, and advanced air mobility vehicles and unmanned aircraft systems. The program will consist of multiple awards, with a total funding available of $25 million for the duration of the program. Some key points to consider for this opportunity include: • The program is a cost-sharing cooperative agreement, with a 1:1 minimum cost share requirement. • The period of performance for each agreement is expected to be up to 24 months. • The program will support the development of technologies that provide a benefit in at least one of the environmental areas of fuel efficiency, noise, NOx emissions, and particulate matter emissions. • The program will require participants to submit proposals that include a technical/management proposal, a pricing/business proposal, and an agreement feedback proposal. • The FAA reserves the right to exercise option periods at its sole discretion, and does not anticipate holding an additional procurement cycle for the option period.

Attached files

Contact

[email protected]

Key dates

Opened
1/16/2026
Questions due
4/13/2026
Closes
5/18/2026
Duration
24 months

Last updated

Details

Type
Request for Proposal
Industry
Aerospace and Defense
NAICS
541330
Solicitation №
693KA9-26-R-00006

Budget estimate

$1,000,000 – $5,000,000

The total funding available for this program is $25 million, and the FAA anticipates multiple awards. The actual amount of each award will be specified prior to award and is at the sole discretion of the FAA. Based on this information, it is estimated that the budget for each award could range from $1 million to $5 million, depending on the scope and complexity of the project. The budget will be based on a cost-reimbursement basis, with the FAA providing up to 50% of the total project cost.

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